Question

Given the formula for the circumference of a circle, C=2πr, how would you rearrange the formula if you were interested in finding the radius of the circle?

Answer 1

To rearrange the formula to find the radius of the circle, we need to isolate the 'r' term on one side of the equation. The current formula is:

C = 2πr

To find 'r', we can divide both sides of the equation by 2π:

C / (2π) = (2πr) / (2π)

This simplifies to:

r = C / (2π)

Therefore, by rearranging the formula, we find that the radius of the circle is equal to the circumference divided by 2 times π.